SAS Zombie Assault Wiki

Ninja Kiwi, previously known as Kaiparasoft Ltd, is a video game developer founded in Auckland, New Zealand , "NK", as it is often called, focuses primarily on developing games for Mobile and Steam, and Consoles. They previously focused on producing flash games for their website.

Ninja Kiwi is a Subsidiary of Modern Times Group, They have two studios Ninja Kiwi, and Ninja Kiwi Europe.


Ninja Kiwi was first founded in 2006 by the brothers Chris and Stephen Harris in Auckland, New Zealand. They began developing flash games in a spare bedroom with both brothers working part time.

In 2007, they released one of their earliest popular games, Bloons!, the predecessor to the many other games in the Bloons Series.

In 2008, they released the first game in a new series, SAS: Zombie Assault.

Digital Goldfish, based in Dundee, Scotland, was acquired in 2012, renamed Ninja Kiwi Europe.

February 10th, 2017, Ninja Kiwi announces there are no plans for further updates to either version of SAS 4.

July 8, 2020 Ninja Kiwi Archive Released all previous flash games available after End of Life of Adobe Flash.

Dec 31 2020, Adobe Flash Development discontinued all Ninja Kiwi flash game development ends.

Ninja Kiwi was acquired by Modern Times Group on 24 March 2021 for 1.6 billion crowns ($186 million USD).

October 20 2021, First update released for SAS 4 Mobile in 4 years.

SAS: Zombie Assault Series

The following is a complete list of publications by Ninja Kiwi as a part of the SAS: Zombie Assault series.

For info on the Bloons Series, and the Bloons TD Series. visit the Bloons Wiki.


The founders of Ninja Kiwi of New Zealand are Chris and Stephen Harris. Ninja Kiwi currently employs 70 people between both studios.

Often times, the staff will be seen interacting with users on their Blogs, and the Ninja Kiwi Reddit(Previously Ninja Kiwi Forum).

List of Known staff aliases online, previous and current:

  • Chris Harris
  • Stephen Harris
  • Jonathan
  • Aaron
  • Libertebelle
  • Catt
  • Matt
  • Lachlan
  • Bottleopener
  • Logan
  • Richard Ninjakiwi
  • Scott Ninjakiwi
  • Tosh
  • NK_Nutter
  • Spool
  • Eliket
  • Sam NK (Who is mostly on mobile version of SAS 4)